Профессиональный коаксиальный динамик BEYMA 8CX300Nd/N. Инструкция на английском языке

8CX300Nd/N
COAXIAL TRANSDUCER
www.beyma.com
KEY FEATURES
?  High power handling: 250 / 50 W AES  (LF / HF)
?  High sensitivity: 96 / 104 dB (LF / HF)
?  Low resonant frequency: 61 Hz
?  Low weight and compact common magnet system
design
?  Demodulating ring for low harmonic distortion
?  PM4 diaphragm allows a natural sound
?  Waterproof Carbon Fiber loaded paper cone with
Santoprene surround for high efficiency
?  70? coverage horn for HF dispersion control
TECHNICAL SPECIFICATIONS                                        DIMENSION DRAWINGS
Nominal diameter                   200 mm         8 in
Rated impedance (LF/HF)                      8 / 8 ?
Minimum impedance (LF/HF)                5,3 / 4,7 ?
Power capacity* (LF/HF)               250 / 50 W AES
Program power (LF/HF)                   500 / 100 W
Sensitivity (LF/HF**)              96 dB   1W @ Z N
104 dB   1W @ Z N
Frequency range                       60 - 20.000 Hz
Recom. HF crossover                1,5 kHz or higher
(12 dB/oct min slope)
Voice coil diameter (LF/HF)       63,5 mm       2,5 in
44,45 mm     1,75 in
BL factor                                   9,4 N/A
Moving mass                                0,013 kg
Voice coil length                            15 mm
Air gap height                                7 mm
X damage  (peak to peak)                     24 mm
MOUNTING INFORMATION
THIELE-SMALL PARAMETERS***                              Overall diameter                 212 mm       8,34 in
Bolt circle diameter             198 mm       7,79 in
61 Hz           Baffle cutout diameter:
Resonant frequency, f s
5,1 ?           - Front mount                   181 mm       7,12 in
D.C. Voice coil resistance, R e
13,3           - Rear mount                    183 mm       7,20 in
Mechanical Quality Factor, Q ms
0,28          Depth                            108 mm       4,25 in
Electrical Quality Factor, Q es                                                                               3
0,27          Volume displaced by driver          1,5 l     0,056 ft
Total Quality Factor, Q ts
36,2 l         Net weight                        2,8 kg        6,17 lb
Equivalent Air Volume to C ms , V as
529 µm / N          Shipping weight                    3 kg        6,61 lb
Mechanical Compliance, C ms
0,37 kg / s
Mechanical Resistance, R ms
Efficiency, ? 0                               2,8 %
Notes:
Effective Surface Area, S d                0,022 m 2
* The power capaticty is determined according to AES2-1984 (r2003) standard. Program
Maximum Displacement, X max  ****             6 mm            power is defined as the transducer’s ability to handle normal music program material.
132 cm 3           ** Sensitivity  was measured at 1m distance, on axis, with 1W input, averaged in the range
Displacement Volume, V d
1 - 7 kHz.
Voice Coil Inductance, L e  @ 1 kHz        0,25 mH
*** T-S parameters are measured after an exercise period using a preconditioning power
test. The  measurements  are  carried  out  with  a  velocity-current  laser  transducer  and  will
reflect the long term parameters (once the loudspeaker has been working for a short period
of time).
**** The X max  is calculated as (L vc  - H ag )/2 + (H ag /3,5), where L vc  is the voice coil length
and H ag  is the air gap height.

8CX300Nd/N
COAXIAL TRANSDUCER
www.beyma.com
FREE AIR IMPEDANCE CURVE
[?]
[Hz]
FREQUENCY RESPONSE LF                                    FREQUENCY RESPONSE HF
[dB]                                                     [dB]
[Hz]                                                      [Hz]
Note: On axis frequency response measured with loudspeaker   Note: On axis frequency response measured with loudspeaker
standing on infinite baffle in anechoic chamber, 1W @ 1m  standing on infinite baffle in anechoic chamber, 1W @ 1m
FILTERED AND OFF-AXIS FREQUENCY RESPONSE
[dB]
[Hz]z]
[H
Note: Filtered frequency response measured with loudspeaker standing on
infinite baffle in anechoic chamber, 1W @ 1m with FD-2CX
? Tel.: (34) 96 130 13 75 ? Fax: (34) 96 130 15 07 ? http://www.beyma.com ? E-mail: beyma@beyma.com ?
07/14